[ Grammar ]
Someone …………. the door now. We are not in the living room.
A. are knocking
B. knock
C. is knocking
D. knocked
Select your answer:
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Grammar › View
Where are the books?
A. The books are under the box.
B. The books are in the box.
Modal Verbs › View
Would you like ________coffee?
A. a
B. some
C. any
D. an